CN201238293Y

CN201238293Y - Sound equipment digital audio broadcast combined radio

Info

Publication number: CN201238293Y
Application number: CNU2008200956960U
Authority: CN
Inventors: 刘志雄
Original assignee: Shenzhen 3Nod Electronics Co Ltd
Current assignee: Shenzhen 3Nod Digital Technology Co Ltd; Guangxi 3Nod Digital Technology Co Ltd
Priority date: 2008-07-22
Filing date: 2008-07-22
Publication date: 2009-05-13
Anticipated expiration: 2018-07-22

Abstract

The utility model discloses an audio digital message broadcasting combination radio, which comprises an antenna, a DAB module, an FM modulation radio receiving module, an MCU module, a DAC module, a passage selection module, an amplifier, a speaker, a memorizer interface, an AUX interface, an IPOD interface, a displayer and a keypad, wherein, the antenna is respectively connected with the DAB module and the FM modulation radio receiving module; the output end of the DAB module and the FM modulation radio receiving module is connected with the MCU module; the MCU module is respectively connected with the DAC module, the passage selection module, the amplifier, the memorizer interface, the AUX interface, the IPOD interface, the displayer and the keypad; the DAC module, the passage selection module, the amplifier and a speaker are serially connected with each other in turn. The radio not only can receives the programs of DAB radio and FM radio, but also has the reading functions of IPOD product and MPS/USB/SD card, thereby having multiple functions such as the clock, the transmitter-receiver memorizing, and the like.

Description

Sound equipment digital audio broadcasting Combination Radio

Technical field

The utility model relates to a kind of broadcast receiver, particularly a kind of sound equipment digital audio broadcasting Combination Radio.

Background technology

Anti-external disturbing factor is not subjected to the weak influence of electric wave transmission, receives unaffectedly during fast moving, and this is the wireless advantage of the more traditional class of DAB broadcast receiver place.Yet people can't be satisfied with a broadcast listening program, also wish to hear music, the learning materials of oneself liking whenever and wherever possible.But the DAB broadcast receiver of the first from left function singleness, a right MP3, language repeater also will be purchased a sound equipment in addition in order to pursue high tone quality sometimes.From buying/carry/angle used, all brought inconvenience to people.People's not only appearance of cheap but also multiple functional late model radio that waits in expectation.

Summary of the invention

In order to overcome the existing single technical problem of radio function, it is a kind of with the read functions of IPOD product, the acoustic function of high tone quality that the utility model provides, simultaneously can read the MP3/USB/SD card again, and the subsidiary sound equipment digital audio broadcasting Combination Radio that functions such as alarm clock, radio station storage are arranged.

The technical solution of the utility model is: comprise antenna, DAB module, FM FM radio module, MCU module, DAC module, channel selecting module, amplifier, loud speaker, display and keyboard, described antenna links to each other with DAB module, FM FM radio module respectively, the output of DAB module, FM FM radio module connects the MCU module, the MCU module links to each other with DAC module, channel selecting module, amplifier, display and keyboard respectively, and DAC module, channel selecting module, amplifier, loud speaker are connected in series successively.

In the above-mentioned sound equipment digital audio broadcasting Combination Radio, also comprise the IPOD interface, described IPOD interface links to each other with the MCU module.

In the above-mentioned sound equipment digital audio broadcasting Combination Radio, also comprise memory interface, described memory links to each other with the MCU module.

In the above-mentioned sound equipment digital audio broadcasting Combination Radio, also comprise the AUX interface, described AUX interface links to each other with the MCU module.

Technique effect of the present utility model is: the utlity model has DAB module and FM FM radio module, not only can receive common FM program, also can receive the DAB program.In addition, the utlity model has IPOD interface, memory interface, Aux interface, can play the audio signal of multiple form.The utlity model has simple and direct button operation, the appearance design of small and exquisite novelty, easy to carry and cheap, be a desirable family expenses, outdoor, hotel with multi-functional audio digital radio product.

Below in conjunction with accompanying drawing the utility model is further described.

Description of drawings

Fig. 1 is the theory diagram of the utility model embodiment.

Fig. 2 is the front perspective view of the utility model embodiment.

Fig. 3 is the rear perspective view of the utility model embodiment.

Embodiment

Referring to Fig. 1, the utility model comprises antenna, the DAB module, FM FM radio module, the MCU module, the DAC module, channel selecting module, amplifier, loud speaker, display and keyboard, memory interface, the AUX interface, the IPOD interface, described antenna respectively with the DAB module, FM FM radio module links to each other, the DAB module, the output of FM FM radio module connects the MCU module, the MCU module respectively with the DAC module, channel selecting module, amplifier, memory interface, the AUX interface, the IPOD interface, display and keyboard link to each other, the DAC module, channel selecting module, amplifier, loud speaker is connected in series successively.

DAB module in the utility model adopts the Tcc3110 chip, and Tcc3110 is the DMB user side receiving chip of the TELECHIPS of Korea S multimedia chip development company exploitation.Tcc3110 supports the dual-band pattern.Tcc3110 separates mediation Baseband Channel decoding two parts by RF and forms, and wherein the RF demodulation part comprises low noise amplifier LNA, low-converter, channel selecting separator CSF, voltage controlled oscillator VCO, the Baseband Channel decoded portion comprises 10 ADC, intermediate frequency mixer, synchronizing channel decoding or the like.The MCU module adopts the Tcc8620 chip, Tcc8620 is 32 RISC single-chip microcomputers of ARM nuclear of the TELECHIPS of Korea S multimedia chip development company exploitation, be used for as the decoding of MP3 or other audio formats or the master control of coded system, can be applicable to portable consumer class audio electronics product, class such as PDA, automobile audio, family's combination audio or the like.Tcc8620 adopts the CMOS technology of 0.18um, and chip operation needs the nuclear power supply of 1.65V-1.1.9V, the IO power supply of 3.3V-3.6V.The SDRAM of the integrated 16Mbit of Tcc8620 and the Norflash of 4Mbit need not external software memory module, have good electromagnetic compatibility characteristic.FM FM radio module adopts chip TEA5767, and the DAC module adopts chips W M8725, and channel selecting module adopts chip PT2314, and amplifier adopts chip AT4871, and memory interface can use USB storage and SD card.

Referring to Fig. 2 and Fig. 3, embodiment of the present utility model is provided with key groups 1, realizes the auxiliary function of quarter-bell, sleep, automatic channel search scanning, affirmation, menu, mode switch; Be provided with key groups 7, enforcement auxiliary function mode switch, affirmation, volume increase, volume down; Key 2 is stirred in the control (HOLD) of also withing a hook at the end; The greedy button 6 of sleeping is set the jingle bell delay time arbitrarily; Slot 4 is used for being connected broadcast with the IPOD product; Whole broadcast receiver 3 is the sound chambeies that inside is airtight, is provided with loudspeaker installing hole 5 sound of resetting behind the loudspeaker is installed; Adjustable LCD backlit display screen 8 is arranged in addition, show board operating state and content of text messages; As seen rear perspective view has power supply input port 9 input power supplies, and external source of sound input interface 10 can realize that the primary sound of external sources of sound such as MP3, CD is reset.Soft antenna receives socket 11 and can be used to insert soft antenna reception numerical digit news broadcasting signal.

Operation principle of the present utility model is as follows: receive aerial electric wave at antenna, system switches to DAB module Tcc3110 or FM module by the RF switch with the RF signal.System is in DAB mode of operation following time, and signal is entering Tcc3110 through behind the band pass filter, and after handling through a series of RF small signals, input signal is finished by demodulation, and the baseband signal that obtains enters the base banddecoder of Tcc3110 immediately.Mpeg data stream after finishing channel-decoded is delivered to system master chip Tcc8620 with the SPI communication pattern, Tcc8620 adjusts required DAB frequency with I2C communication simultaneously, further become the pcm audio signal after the decoding and issue DAC WM8725 from the mpeg data of the Tcc3110 Tcc8620 that flows through with the I2S pattern, after finishing digital-to-analogue conversion, WM8725 becomes required simulated audio signal, simulated audio signal enters analog signal channel and selects chip PT2314, Tcc8620 is according to mode of operation, select pairing output channel, amplifying the rear drive loud speaker through audio frequency amplifier AT4871 by the audio signal of PT2314 output.System is under the FM mode of operation, and system switches to FM FM radio module by the RF switch with the RF signal.Tcc8620 adjusts the FM frequency with I2C communication, the FM FM radio module audio signal that demodulation is intact is delivered to analog signal channel and is selected chip PT2314, Tcc8620 is according to mode of operation, select pairing output channel, amplifying the rear drive loudspeaker through audio frequency amplifier AT4871 by the audio signal of PT2314 output.

The utility model can also utilize the iPod interface to play the iPod audio frequency, Tcc8620 controls iPod with serial interface communication mode, the output of iPod audio frequency is sent with analog signal channel and is selected chip PT2314, Tcc8620 is according to mode of operation, select pairing output channel, amplifying the rear drive loudspeaker through audio frequency amplifier AT4871 by the audio signal of PT2314 output.

The utility model can also utilize Aux interface or memory interface to play the audio signal of multiple form, input directly enters analog signal channel and selects chip PT2314, Tcc8620 is according to mode of operation, select pairing output channel, amplifying the rear drive loudspeaker through audio frequency amplifier AT4871 by the audio signal of PT2314 output.

Claims

1, a kind of sound equipment digital audio broadcasting Combination Radio, it is characterized by: comprise antenna, DAB module, FM FM radio module, MCU module, DAC module, channel selecting module, amplifier, loud speaker, display and keyboard, described antenna links to each other with DAB module, FM FM radio module respectively, the output of DAB module, FM FM radio module connects the MCU module, the MCU module links to each other with DAC module, channel selecting module, amplifier, display and keyboard respectively, and DAC module, channel selecting module, amplifier, loud speaker are connected in series successively.

2, sound equipment digital audio broadcasting Combination Radio according to claim 1 is characterized in that: also comprise the IPOD interface, described IPOD interface links to each other with the MCU module.

3, sound equipment digital audio broadcasting Combination Radio according to claim 1 is characterized in that: also comprise memory interface, described memory links to each other with the MCU module.

4, sound equipment digital audio broadcasting Combination Radio according to claim 1 is characterized in that: also comprise the AUX interface, described AUX interface links to each other with the MCU module.

5, sound equipment digital audio broadcasting Combination Radio according to claim 1, it is characterized in that: described DAB module is chip Tcc3110.

6, sound equipment digital audio broadcasting Combination Radio according to claim 1, it is characterized in that: described MCU module is chip Tcc8620.

7, sound equipment digital audio broadcasting Combination Radio according to claim 1 is characterized in that: described FM FM radio module is chip TEA5767.

8, sound equipment digital audio broadcasting Combination Radio according to claim 3 is characterized in that: described memory interface is any of USB interface, SD card.